Samuele Locatelli
100 lines
3.3 KiB
C#
100 lines
3.3 KiB
C#
/* ========================================================================
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* Copyright (c) 2005-2020 The OPC Foundation, Inc. All rights reserved.
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*
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* OPC Foundation MIT License 1.00
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* The complete license agreement can be found here:
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* http://opcfoundation.org/License/MIT/1.00/
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* ======================================================================*/
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using System;
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using System.IO;
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using Newtonsoft.Json;
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namespace Opc.Ua.Gds.Server.Database.Linq
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{
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/// <summary>
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/// A GDS database with JSON storage.
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/// </summary>
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/// <remarks>
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/// This db is good for testing but not for production use.
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/// </remarks>
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public class JsonApplicationsDatabase : LinqApplicationsDatabase
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{
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#region Constructors
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/// <summary>
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/// Create a JSON database.
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/// </summary>
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public JsonApplicationsDatabase(string fileName)
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{
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m_fileName = fileName;
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}
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/// <summary>
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/// Load the JSON application database.
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/// </summary>
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static public JsonApplicationsDatabase Load(string fileName)
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{
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if (fileName == null) throw new ArgumentNullException(nameof(fileName));
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try
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{
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if (File.Exists(fileName))
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{
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string json = File.ReadAllText(fileName);
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JsonApplicationsDatabase db = JsonConvert.DeserializeObject<JsonApplicationsDatabase>(json);
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db.FileName = fileName;
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return db;
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}
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}
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catch
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{
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}
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return new JsonApplicationsDatabase(fileName);
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}
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#endregion
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#region Public Members
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/// <summary>
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/// Save the complete database.
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/// </summary>
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public override void Save()
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{
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string json = JsonConvert.SerializeObject(this, Formatting.Indented);
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File.WriteAllText(m_fileName, json);
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}
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/// <summary>
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/// Get or set the filename.
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/// </summary>
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[JsonIgnore]
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public string FileName { get { return m_fileName; } private set { m_fileName = value; } }
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#endregion
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#region Private Fields
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[JsonIgnore]
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string m_fileName;
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#endregion
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}
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}
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